The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 12, 2017
Filed:
Jun. 01, 2011
Gjermund Grimsbo, Trondheim, NO;
Marcus Fathi, Trondheim, NO;
Bjarne Bugten, Hundhamaren, NO;
STATOIL PETROLEUM AS, Stavanger, NO;
Abstract
A method and apparatus for determining the location of a material located behind an obstruction. A plurality of acoustic resonators () having a known resonant frequency are dispersed in the material (), the material to be located on a first side of the obstruction (). An instrument () is provided at an opposite side of the obstruction to the material. The instrument emits an acoustic signal and measures a response. If the resonant frequency is detected, it is determined that the material is located substantially adjacent to the instrument. The apparatus may be used for determining the height of cement slurry located between a well casing wall and a borehole.